Marble wall 77 3D model is available on CGTrader for $19. Original author: notfun. Specs: 100 polys, 100 verts.
STL (Stereolithography, filesize: 1.32 MB), OBJ (OBJ, filesize: 1.07 MB), MAX (Autodesk 3ds Max, filesize: 1.55 MB), FBX (Autodesk FBX, filesize: 1.51 MB)